Shade-roller



(No Model.)

J. O. LAKE. Shade Roller. No. 236,682. v Patented Jan. 18, I881.

WITNESSES: I JNVENTOR TTORVE UNITED STATES PATENT EEICE.

J. CHRISTOPHER LAKE, OF PHILADELPHIA, PENNSYLVANIA.

SHADE-ROLLER.

SPECIFICATION forming part of Letters Patent No. 236,682, dated January 18, 1881. Application filed J une 5, 1880. (No model.)

To all whom 'it may concern:

Be it known that I, J. CHRISTOPHER LAKE, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented Improvements in Shade-Rollers, of which the following is a description, reference being had to the accompanying drawings, forming part of this specification, wherein- Figure 1 is an elevation of a shade and its fixtures, partly in section, embodying my improvements. Figs. 2 and 3 represent detail elevations. Fig. 4 is a detail section of capfor butt-end of the roller, and Fig. 5 is an end view of shade and fixture.

My invention relates to that class of sin glecord curtain -fixtures in which the shade is wound up by drawing down a cord, thus prodncing a rotation of thelroller with its spindle, and in which the shadeis lowered by drawing it down, the roller moving therewith while the spindle remains stationary.

My invention has for its object to provide means for preventing the cord from becoming caught in or by the drum or sheave on which it winds; and my improvements consist, first, in the peculiar construction of said drum or sheave; and, second, in the combination therewith of a butt-end cap with a conical journal, as hereinafter more fully set forth.

Referring to the accompanying drawings, A indicates a shade fastened to a roller, B, on the butt or solid end of which is a metallic cap, 0, with a conical journal, 0. The opposite end of said roller is bored for the reception of and receives a metallic spindle, D, having contracted portions (1 d, into which the fiber of the wood of the roller enters, so as to produce binding and secure friction between said roller and spindle, as set forth in Letters Patent of the United States granted to me, dated February 12, 1878. The outer end of said spindle is cylindrical, to form a rollingjournal, d, and is formed also with a disk or collar, d notched to produce teeth (1 whereby it operates as a ratchet or stop.

E represents a disk with a hollow boss, 0. Through said boss the spindle D passes, bringin g the end of said boss against the collar (1 The parts D E, made as described, form the roller-spindle, and also a sheave or drum on which the cord F is wound, said cord encircling the boss or barrel e between the sides or cheeks d E. The disk E is formed with pins 6 c, which enter the end of the roller, whereby it is made fast to the latter.

G represents a bracket, having an elongated slot, g, for the journal d, and a stop or fixed dog, 9', for the ratchet (1 The journal 0 revolves in a common bracket, H.

The operation is as followsz On drawing down the cord the shade is wound up on the roller, the latter revolving freely, as the journal d is then in the outer part of the slot g and ratchet (1 out of contact with stop g. 011 letting go of or slacking the draft on the cord the journal cl moves to the inner part of slot g, bringing ratchet (1 into contact with stop 9. This prevents the spindle D from further rotation, and, so long as the friction between it and the roller is not overcome, will maintain the shade in its adjusted position. 0n drawin g, however, downwardly with moderate force on the shade the latter descends, the roller at the same time rotating, carrying the disk E and boss or drum 6 with it, and winding up the cord, the spindle D and collar d which forms one of the checks or sides of the sheave, remaining stationary, owing to contact with stop 9.

As far as the manipulation of the shade and cord is concerned the motions gone through are substantially the same as in my patent aforesaid; but. with the construction shown in said patent, the entire sheave being in one piece, the side next to the spindle-bracket (corresponding to the collar 01 in the present case) moved with the sheave, not unfrequently catching the free part of the cord when the sheave was being drawn down, and winding the same around the journal between said side and the bracket. With the construction herein described, however, as said side (1 remains stationary when the cord is being wound up, this source of objection is entirely removed.

To prevent the collar d from moving or working away from the end of the boss 0 sufficiently to permit the cord to Work down between said collar and boss, I make the journal 0 on the butt or solid end of the roller conical. This causes the roller to constantly bear toward the spindle end, thereby keeping the boss 6 always up to the side or collar (1 avoiding any separation between these parts sufficient to permit the cord to be caught between them.

\Vhat 1 claim as my invention is- 1. The combination of the spindle D, having collar d with the disk E, having hollow boss 0, said parts being constructed to unite and form a sheave or drum for the winding-cord, one side of which remains stationary with the spindle, while the other, carrying said boss, which forms a winding-barrel, turns with the roller, substantially as shown and described.

2. In combination with a roller, B, having a spindle, D, with collar (1 forming one side of a sheave or cord drum, the other side of J. CHRISTOPHER LAKE.

\Vitnesses:

M. D. GONNOLLY, WM. M. MGKNlGHT. 

